Rotary pump or motor



Nov. 1951 WEYER ROTARY PUMP 0R MOTOR Filed April 17, 1947 2 g] 5JLJLULLJKJ Patented Nov. 6, i951 ROTARY PUMP OR MOTOR Ferdinand M;Weyer, Detroit, Mich., assignor to Marine Products Company, Detroit,Mich., a

corporationiofMichigan Application April 17, 1947, Serial No. 742,168

This-invention relates to fluid pressure pumps 'or motors. 4

One object of this invention is to-provide a fluid pressure pump ormotor having a rotor with vanes-of resilient mate-rial, thesevanesflexing when they engageabutments which project from the sides ofthe casing between the inlet and outlet ports so as to effectivelyseparate the suction andzpressuresides of the pump-or motor. Anotherobject isto providea fluid pressure pump or motor as set-forth inthepreceding obgiect; wherein the resilient-vanes are of V-shaped or:herringbone cross-section; preferably extending. in opposite directionsfrom: a central (annu- 'lar rib of resilientmaterial. Another objectistozprovide a fluid pressure pump or motor; as seti forthliin' thepreceding objects, wherein c the abutments consist: of relativelyfiatetopped elevations having inclined approaches at their oppositeedges so.:that the vanes are flexed gradually. as. they, .inlefiect;climb the approachesor ramps;to the top. of :theabutment and descend theramp on the opposite side thereof.

Another object is to providea' fiuid pressure pump or motor as set-forthinthe preceding obiects, wherein the vanesand central-annular rib areconstructed of elastic deformable material such asrubher or syntheticrubbenso that the vanes possess natural resilience which holds them insealing engagementwithrthe walls-of the abutments.-

I Another object is-to provide a-fluid'pressure pump. or motoras setforthin the. preceding obie t wher in he vanes while, traversing thetopportions of the" abutments' give-constant displaccments.

Another obje t .istc provide amodified. fl pressure. pump orp otorwherein the vanes are f's rai ht rath r than V=-.shap =or h rringbonsection and ext nd straight across: the rotor in planes perpendicular. tthe plane of the central rib.

In th drawings:

. Fi ure 1 sa central vertical lon itudinal s tion-through a fluidpressurepump'or-motor: according to a preferred formof the inventionFigure 2 is a'verticalcrcss sectiontaken-alon the zigzag line 2-.-.=ZinFigure 1;

' Figure 3 isa-horizontal section, withthe rotor in top-plan view, takenalongthe curved line 3.-..-. 3.. in FigureQ showing the flexing-:of-therotor vanes ag in t heabutment Fi ur Lis t p-plan viewcithe r torshown ls ire 3. ezncvcdirom hecasing;

idfi 'ig ureflis asiciaelevation atone cr me abut- 11 Claims. (01.103417) 2v ment plates shown in Figure 3, removed from the pump ormotor; Figurefi is an edge elevation of the abutmen plates;

Figure 7 is a top-plan view of a modified r'otor, removed from the pumpor motor;

Figure 8' is a side elevation of the modified I pedestal l2'which formsa journal bearingsforra shaft I4, is a cup-shaped housing portion: 15.

The" housing: portion l5 consists of a disc-like radial Wall I6 and acylindrical axial wall-.1 1 having a cylindrical bore-or chambertherein, closed by adisc-like end plate- I9 'bolted ther'eto as at 20.The end plate'lllis provided with-a reduceddiameter portion '21 whichextends into the cylindrical chamber I8.

Mounted in the cylindrical chamber 18 0110pposite sides thereof areoppositely-facing: abutment discs or plates 22 of similar but oppositeconstruction and having projections-23 thereon facing outwardin-opposite directions and seated recesses 24 in the wallportion l6 andend plate l9 respectively- (Figure 1). The'abutment discs or plates 22'(Figures -5'and'6) are circular with central holes 25'and havingoffsetabutment portions Zfiapproachedby inclined'portions 21 formingramps leading to the fiat-topped" middle Thus, the abutment portions 26are-approximately fan-shapedwiththe central portions-29cm away alongan-arc sons to provide a flat surface surrounding the centra hole 25.

The-abutment discs or plates 22-are mounted in the housing portion 15between radially-ex- .tending ports 30 and 3i respectively (Figure.2)

formed in-radially-extending bossesv 32 and 33 with threaded openings 34and 35-to whicl'rthe intake and discharge pipes are connected.

Mounted on the inner endof the shaft Wand splined theretoas'at 36(Figure 1) is a rotor.

The-rotor 31 consists'of' anannular sleeve '38 whichis' bored andgrooved-tent the splines-86, and which has anannular ridge orafiangellarunning around. the .centralportion thereof. Mounted upon the sleeve38,1 which is preferably 9; metal, ,is the. hub 40; orthe vane unit:4.-|;,;;which disc-shaped rib 42 joins the hub 40. The gaps 44' betweenthe vanes 43 and the hub 40. provide flexibility for the flexing of thevanes 43 as they pass over the abutment projections 26 (Figure 3).

The vanes 43 are so inclined relatively to the discshaped rib 4| thattheir ends resemble arrow' heads aimed in the direction of rotation ofthe rotor. The end portions 45 of the hub 40 project outward upon theends of the vanes 43 (Figure 4), and also have annular grooves 46therein engaging the side walls of the abutment discs or plates 22.

Leading into the bore I3 is a transverse threaded hole or port 41(Figure 1), into which is threaded the stem 48 of an oil cup 49. Thelat- I ter is of a conventional pattern,having a lid 50 pivoted theretoat 5| so as to permit the insertion of oil or other lubricant forlubricating the shaft M. The right-hand end of the bore I3 is providedwith an annular cavity 52 containing annular packing 53 and compressedby an annuflar glandor nut 54 threaded therein as at 55.

This backing 53 prevents the loss of the lubricant along the shaft l4.

4 ating pressure. The pump is simple in construction, inexpensive tomanufacture, and of long operating life.

The operation of the preferred form of the invention shown in Figures 1to 6 inclusive has been described as that of a pump. It will be understood, however, that by-feeding pressure fluid to the port 30 andallowing it to discharge from the port 3|, the device will operate as amotor to rotate the shaft I4 and pulley 58. Power can then be taken offby means of a belt engaging the pulley groove 59.

The modified rotor 60 shown in Figures 7 and 8 is generally similar tothe principal form of rotor 31' shown in Figures 1 to 4 inclusive, andhas a similar central sleeve 6| upon which is mounted the hub 62 of arotor unit 63 of elastic deformable material, such as rubber orsynthetic rubber. The rotor 60 is also provided with a centraldiscshaped rib 64 with vanes 65 arranged in planes which aresubstantially perpendicular to the plane of the rib 64 instead of beinginclined at an angle thereto, as in the principal form of the Mounted onthe outer end of the shaft I4 and secured thereto as by the set-screw56, is the hub .51 of a pulley 5B which is provided with a suitableannular groove 59 for engagement by a driv- .ing belt (not shown). Thepulley 58 is a conventional type and for purposes of convenience, is"shown as having a V-groove to accommodate a .V-belt.

It will be evident, however, that any other type of belt or sprocket maybe used in order to drive the shaft |4.'

invention shown in Figures 1 to 6 inclusive, the

pump or motor is assembled as shown in Figures 1 and 2, and power isapplied to the driving pulley 58, the rotation of the rotor 31 causesits herringbone vanes to be flexed slightly inward as they engage theside walls of the abutment discs The vanes 43 are flexed still furtherinward as they climb the ramp 21 and pass over the flat middle portion28 between the ports 33 and 3|.

Consequently, with a counter-clockwise rotation of the shaft 4 (Figure2), as the vanes 43 flex "inward while climbing the ramps 21 adjacentthe port 3|, they squeeze water out of the space between the oppositearms of the V-shaped vanes. This water, having nowhere else to gobecause of the incompressibility of the water behind it, is forced outthrough the port 3|. On the other hand, when the vanes 43 expand onleavingthe ramps 21 adjacent the port 30, they suck in water. Therefore,the port 30 becomes the suction or intake port and the port 3| thepressure "or discharge port. Thus, the pressure fluid developed by therotation of the rotor 31 is expelled through the discharge port 3| andis carried away by the discharge conduit (not shown). If 'thepump isused for a bilge pump, then the suc- In the operation of the principalform of the' invention. The vanes 65, like the vanes 43, are cut away soas to provide caps 66 adjacent the hub 62, this construction permittingfree flexing of the vanes 65. The remainder of the rotor 6|] issubstantially of the same construction as that of the rotor 31, and itsoperation is similar. The rotor 60, however, is capable of'rotating inopposite directions, whereas the rotor 31 is preferably adapted torotate in one direction only. The ends of the vanes 65, of course, flexinward as they engage the abutment portions 26 of the abutment discs orplates 22 and straighten out when they pass beyond the portion 26.

The modified pump or motor 10 shown in Figure 9 employs a rotor 31similar to the rotor 31 employed in the pump or. motor of Figures 1 to 6inclusive and having its various parts similarly designated. The rotor31, however, is mounted ina casing 1| having a chamber 12 with asubstantially cylindrical peripheral wall 13 having inlet and exhaustports therein similar to the ports 34 and 35 shown in Figure 2. Thechamber 12 is closed by an end plate 14 which has an end wall 15inclined at slightly less than right angles to the axis of the rotorshaft l4. The chamber 12 has an end wall 15 inclined at slightly lessthan right angles to the axis of the rotor shaft l4. The chamber 12 hasan end wall 16 which is also inclined at slightly less than right anglesto the axis of the rotor shaft |4 so that the end walls 15 and 16 areslightly closer together at the top of the chamber 12 than at the bottomthereof. Thus the end walls 15 and 16 are inclined to the axis ofrotation of the shaft M at an angle of slightly less than The modifiedpump or motor 10 does notemploy the abutments 26 used in the form shownin Figures 1 to 6 inclusive, but the inclined end walls 15 and 16themselves serve as abutments. The shaft I4 is journaled in a bore 11 inthe easing H in a manner similar to that shown in Figure 1 and driven ina similar way. The end plate 14 is also secured to the casing 1| in asimilar manner to that of Figure 1.

The operation of the modified pump or motor shown in Figure 9 isgenerally similar to that of the form of pump or motor shown in Figures1 to 6 inclusive. Inits operation as a pump, power is applied to rotatethe shaft l4 andcon sequently the rotor 31. As the vanes 43 pass fromthe ammer 1| to the top thereof, the converging of the end walls 15 andsac-mere flmauses the vanes d3 tar-flex inward-"in an :axial "direction,thereby bringing about a pumping action-withrespect to the liquid-inurechamber "112 and (causing liquid to be ,drawnrin "through the inlet:port and nutthrough the exhaust port iima manner isimilartoitheoperationof the pump ortmotor i ll sh'ow'n inuFigures 1 tooinclusive.

The operation :of the pump or motor 111 as a motor is brought about bysupplying pressure i'luid'toone o'f EhEEDOItS, this causing the rotor 31tosrotate and impart rotation to the shaft HI before:beingwdisc'hargedthrough the outlet port. Thevanes 13 flex laterally as before as theypass from the bottom of the chamber 12 to the top thereof, because ofthe converging of the end walls :'|:5:tand :76.

-While theuintake .and discharge ports 30 and 31 have been described ascircumferentially spaced, they are not necessarily located entirely on'the, peripheral portion Fl, =but may'extend partially down into thesidewalls or be :located inthesside :walls It and :19 "adjacenttheperip'hcry. This construction is employed in high speed installationswhere the centrifugal force arising from the rotating :liqu-id becomesunduly great.

What I claim is:

1; .A rotary pump or motor comprising a hollow casinghavingaxially-spaced' end walls-and ci rrcumferentially-spacedfluidfint-ake anddischarge lports, a shaft rotatably mounted in saidcasing, arotor having a hub portion mounted on-said shaft, :said rotoralso having .a flange portion projecting from said :hub portion, saidflange portion having vanes of elastic deformable material securedthereto and disposed radially :rela 5 casing having axially-spaced endwalls and circumferentially-spacedfluid intake and discharge ports, ashaft rota-tably'mounted in saidcasing, a rotor having a hubportion-mounted onsaid shaft, said rotor also having a flange portionprojecting from said'hub portion, saidflange portion having vanesof-elastic deformable materiaisecured thereto and disposed'radiallyrelatively to-said hub portion, and an abutment mounted on andprojecting axially inward from each of said end Walls between said portsand engageable with said vanes to flex saidrvanes during rotation ofsaidrotor inaa direction approximately parallel to the axis of rotationof said rotor, said vanes being arranged in approximately V-shapedformations, said vanes at their inner ends being cut away from said hubportion.

3. A rotary pump or motor comprising a hollow casing havingaxially-spaced end walls and circumferentially-spaced fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion; said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and an abutment mounted on andprojecting axially inward from each of said end walls between said portsand engageable with said vanes to flex said vanes during rotation ofsaid rotor in a direction approximately parallel to the axis of rotationof said rotor, and said vanes projecting in opposite directions fromsaid flange portion and at oblique angles relatively thereto, said vanesat their inner ends being cut away from said hub portion.

4. A rotary'pump or motor comprising a ho]- low casing havingaxially-spaced end walls and circumferentially-sp'ac'ed fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion, said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and an abutment mount'edon andprojecting axially-inward from eachof said end walls between said portsand engageable with said vanes to flex said vanes during rotation ofsaid rotor in a direction approximately parallel to the axis of rotationof said rotor, said flange portion projecting outward from said-hubportion at 'a location intermediate theends thereof, and's'aid vanesbeing secured to said flange portion at oblique angles relativelythereto, said vanesat their inner ends being cut away from said hubportion.

5. A rotary pump or motor comprising a hollow casing havingaxially-spaced end walls and circumferentially-spaced fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a 'rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion, said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and an abutment mounted on andprojecting axially inward from each of said end walls between said portsand engageable with said vanes to flex said vanes during rotation 'ofsaid rotor in a direction approximately parallel to the axis of'ro'tationof said rotor, said-vanes being arranged inapproximatelyv-shaped formations, said vanes at their inner endsbeing-cut away from said hub portion.

6. rotary pump or motor comprising a hollow casing having axially-spacedend walls and circumferentially-spaced fluid intake and discharge ports,a shaft rotatably mounted in said casing, a rotor having a hub portionmounted on said shaft, said rotor-also having a flange portionprojecting from said hub portion; said flange portion-having vanes ofelastic deformable material secured thereto and disposed radiallyrelatively tosa'id hub portion, and an abutment mounted on andprojecting axially inward from each of said end walls between said portsand engageablewith said vanes to flex said vanes during rotation of saidrotor in a direction'approximately parallel to the axis of rotation ofsaid rotor, said flange portion projecting outward from said hub portionat a location intermediate the ends thereof, and said vanes beingsecured to said flange portion at oblique angles relatively thereto,said vanes at their inner ends being cut away from said hub portion. 1

7. A rotary pump or motor comprising a hollow casing havingaxially-spaced end walls and circumferentially-spaced fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion, said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and an abutment mounted on andprojecting axially inward from each of said end walls between said portsand engageable with said vanes to flex said vanes during rotation ofsaid rotor in a direction approximately parallel to the axis of rotationof said rotor, said abutment having a central portion with asubstantially flat abutment surface and inclined portions leading fromlocations near said ports to said central portion, said vanes at theirinner ends being cut away from said hub portion.

8. A rotary pump or motor comprising a hollow casing havingaxially-spaced end walls and circumferentially-spaced fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion, said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and an abutment mounted on andprojecting axially inward from each of said end walls between said portsand engageable with said vanes to flex said vanes during rotation ofsaid rotor in a direction approximately parallel to the axis of rotationof said rotor, said abutment having its opposite ends substantiallyflush with said end walls adjacent said ports and projecting axiallytherefrom in inclined planes, said abutment having a central portionwith a substantially flut abutment surface substantially parallel withsaid end wall and spaced axially therefrom, said vanes at their innerends being cut away from said hub portion.

9. A rotary pump or motor comprising a hollow casing havingaxially-spaced end walls and circumferentially-spaced fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion, said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and a pair of inwardly andaxially projecting abutments mounted on said end walls between saidports and engageable with said vanes to flex said vanes during rotationof said rotor, one of said abutments being mounted on each of said endwalls, said abutments having substantially flat central portions andinclined end portions leading thereto, said vanes at their inner endsbeing cut away from said hub portion.

10. A rotary pump or motor comprising a hollow casing havingaxially-spaced end walls and circumferentially-spaced fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion, said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and an abutment mounted on andprojecting axially inward from each of said end walls between said portsand engageable with said vanes to flex said vanes during rotation ofsaid rotor in a direction approximately parallel to the axis of rotationof said rotor, said vanes being disposed substantially in axial planesof said shaft and substantially perpendicular to said flange portion,said vanes at their inner ends being cut away from said hub portion.

11. A rotary pump or motor comprising a hollow casing havingaxially-spaced end walls and circumferentially-spaced fluid intake anddischarge ports, a shaft rotatably mounted in said casing, a rotorhaving a hub portion mounted on said shaft, said rotor also having aflange portion projecting from said hub portion, said flange portionhaving vanes of elastic deformable material secured thereto and disposedradially relatively to said hub portion, and an abutment mounted on andprojecting axially inward from each of said end walls between said portsand engageable with said vanes to flex said vanes during rotation ofsaid rotor in a direction approximately parallel to the axis of rotationof said rotor, said flange portion projecting outward from said hubportion intermediate its ends, and said vanes projecting axially inopposite directions from said flange portion in substantially axialdirections and substantially perpendicular to said flange portion, saidvanes at their inner ends being cut away from said hub portion.

FERDINAND M. WEYER.

REFERENCES CITED The following references are of record in the file ofthis patent:

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